Common Weakness Enumeration
CWE-91
Allowed-with-ReviewXML Injection (aka Blind XPath Injection)
Abstraction: Base · Status: Draft
The product does not properly neutralize special elements that are used in XML, allowing attackers to modify the syntax, content, or commands of the XML before it is processed by an end system.
227 vulnerabilities reference this CWE, most recent first.
CVE-2026-83607 (GCVE-0-2026-83607)
Vulnerability from cvelistv5 – Published: 2026-09-01 14:23 – Updated: 2026-09-01 15:28
VLAI
EPSS
VEX
Title
xmldom: Element name injection via createElement() bypasses requireWellFormed
Summary
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.14 and 0.9.11, and in xmldom version 0.6.0 and earlier, Document.createElement(tagName) stores an unvalidated element name and XMLSerializer.serializeToString() emits that name verbatim. The requireWellFormed: true path did not validate the element qualified name or synthesized xmlns:PREFIX declaration, so attacker-controlled tag names could inject attributes, elements, or processing instructions into serialized XML or HTML and could cause cross-site scripting when browser-consumed. The unchecked values violate the XML QName constraint, and default serialization and creation-time createElement() behavior remain permissive. This issue is fixed in @xmldom/xmldom versions 0.8.14 and 0.9.11; no fixed version is available for xmldom.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:28 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/xmldom/xmldom/security/advisor… | x_refsource_CONFIRM |
| https://github.com/xmldom/xmldom/pull/1043 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/pull/1050 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/commit/cba132121… | x_refsource_MISC |
| https://github.com/xmldom/xmldom/commit/d8212e632… | x_refsource_MISC |
| https://github.com/xmldom/xmldom/releases/tag/0.8.14 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/releases/tag/0.9.11 | x_refsource_MISC |
Impacted products
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CVE-2026-83605 (GCVE-0-2026-83605)
Vulnerability from cvelistv5 – Published: 2026-09-01 14:18 – Updated: 2026-09-03 17:35
VLAI
EPSS
VEX
Title
xmldom: Attribute name injection via setAttribute() bypasses requireWellFormed
Summary
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.14 and 0.9.11, and in xmldom version 0.6.0 and earlier, Element.setAttribute() calls the private _createAttribute(name) path without validating the attribute name, while Document.createAttribute(name) validates against QName. XMLSerializer.serializeToString() emits attribute names verbatim, and requireWellFormed: true did not validate them, so a crafted name can terminate the intended attribute and inject additional attributes, including event handlers, into browser-consumed output; synthesized xmlns:PREFIX declarations expose the same unchecked-name boundary. This issue is fixed in @xmldom/xmldom versions 0.8.14 and 0.9.11; no fixed version is available for xmldom.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 17:35 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/xmldom/xmldom/security/advisor… | x_refsource_CONFIRM |
| https://github.com/xmldom/xmldom/pull/1043 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/pull/1050 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/commit/cba132121… | x_refsource_MISC |
| https://github.com/xmldom/xmldom/commit/d8212e632… | x_refsource_MISC |
| https://github.com/xmldom/xmldom/releases/tag/0.8.14 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/releases/tag/0.9.11 | x_refsource_MISC |
Impacted products
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CVE-2026-76979 (GCVE-0-2026-76979)
Vulnerability from cvelistv5 – Published: 2026-09-23 12:22 – Updated: 2026-09-23 16:46
VLAI
EPSS
VEX
Title
XML Injection vulnerability
Summary
ZohoCorp ManageEngine OpManager and Firewall Analyzer versions 12.8.709 and below were vulnerable to an XML Injection vulnerability in the Rule Tracking Compare Policies feature.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 13:01 UTC
CWE
- CWE-91 - XML injection (aka blind XPath injection)
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zohocorp | ManageEngine OpManager |
Affected:
0 , < 12.8.710
(custom)
cpe:2.3:a:zohocorp:manageengine_opmanager:*:*:*:*:*:*:*:* |
|
| ZohoCorp | ManageEngine Firewall Analyzer |
Affected:
0 , < 12.8.710
(custom)
cpe:2.3:a:zohocorp:manageengine_firewall_analyzer:*:*:*:*:*:*:*:* |
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CVE-2026-65124 (GCVE-0-2026-65124)
Vulnerability from cvelistv5 – Published: 2026-09-22 14:10 – Updated: 2026-09-22 15:27
VLAI
EPSS
VEX
Summary
NVIDIA Infrastructure Controller for Linux contains a vulnerability where an attacker could cause an XML injection. A successful exploit of this vulnerability might lead to data tampering and denial of service.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 15:27 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | Infrastructure Controller |
Affected:
0 to 1.9
|
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CVE-2026-59728 (GCVE-0-2026-59728)
Vulnerability from cvelistv5 – Published: 2026-07-27 19:54 – Updated: 2026-07-28 14:27
VLAI
EPSS
VEX
Title
@astrojs/rss: XML Injection via Unescaped RSS Feed Fields
Summary
Astro is a web framework for content-driven websites. In versions 1.0.0 through 4.0.18, the source.title and enclosure.type item fields in packages/astro-rss/src/index.ts are interpolated directly into XML template strings without XML-character escaping before being parsed by fast-xml-parser. Both fields are validated only as z.string(), placing no restriction on XML special characters. An attacker who controls these values can inject arbitrary XML into the generated RSS feed: a value containing " can break out of an attribute (as with enclosure.type), and a value containing </source> can close an element early and inject additional nodes (as with source.title). This corrupts feed structure, injects false metadata (for example, a fake <link> pointing to a malicious URL), and can cause feed readers to misparse or display attacker-controlled content. In SSR mode (output: 'server'), the poisoned feed is served on every request to all subscribers. This issue has been fixed in version 4.0.19.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 14:27 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/withastro/astro/security/advis… | x_refsource_CONFIRM |
| https://github.com/withastro/astro/pull/17209 | x_refsource_MISC |
| https://github.com/withastro/astro/commit/fbcfa03… | x_refsource_MISC |
| https://github.com/withastro/astro/releases/tag/@… | x_refsource_MISC |
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CVE-2026-55789 (GCVE-0-2026-55789)
Vulnerability from cvelistv5 – Published: 2026-07-10 19:55 – Updated: 2026-07-13 18:16
VLAI
EPSS
VEX
Title
Logto: SAML IdP injects user-controlled profile attributes raw into signed assertions, allowing privilege escalation at relying Service Providers
Summary
Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's self-hosted SAML application IdP built the signed SAML response and assertion by string-substituting user-controlled profile attributes such as name, email, and custom attribute-mapping values into element-text placeholders of a SAML XML template using samlify 2.10.0, which left those placeholders unescaped. An authenticated low-privilege user could place XML markup in a profile attribute so Logto signed a forged SAML attribute, such as an arbitrary role, allowing privilege escalation at relying Service Providers that authorize on SAML attributes. This issue is fixed in version 1.41.0.
Severity
8.5 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 18:16 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/logto-io/logto/security/adviso… | x_refsource_CONFIRM |
| https://github.com/logto-io/logto/pull/9107 | x_refsource_MISC |
| https://github.com/logto-io/logto/commit/90970548… | x_refsource_MISC |
| https://github.com/logto-io/logto/releases/tag/v1.41.0 | x_refsource_MISC |
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CVE-2026-53723 (GCVE-0-2026-53723)
Vulnerability from cvelistv5 – Published: 2026-06-11 12:42 – Updated: 2026-06-11 16:13
VLAI
EPSS
VEX
Title
guzzlehttp/guzzle-services' XML Request Serialization Vulnerable to XML Injection via CDATA Terminator
Summary
Guzzle Services provides an implementation of the Guzzle Command library that uses Guzzle service descriptions to describe web services, serialize requests, and parse responses into easy to use model structures. Versions prior ro 1.5.4 do not safely serialize scalar XML element values containing the CDATA terminator `]]>`. The XML request serializer writes values containing `<`, `>`, or `&` with `XMLWriter::writeCData($value)`. If attacker-controlled input contains `]]>`, the CDATA section closes early and the remainder is interpreted as XML markup. This is an outgoing request-body integrity issue, not a response parsing issue. The attacker does not need to control the service description or schema. Users are affected when all of the following are true: the application uses `guzzlehttp/guzzle-services` to serialize outgoing requests; a request parameter or `additionalParameters` schema uses `location: xml`; the value is serialized as XML element text, not an XML attribute; the value can contain attacker-controlled, user-controlled, tenant-controlled, or otherwise untrusted input; the value is not constrained by a safe `enum`, `pattern`, or custom filter that excludes `]]>`; and the downstream service parses the generated XML structurally and may act on unexpected, duplicated, or injected elements. Applications that serialize untrusted input into `location: xml` request parameters can emit XML containing attacker-controlled elements outside the intended text node. Depending on the receiving service, this can alter operation semantics, smuggle privileged fields, bypass modeled parameter boundaries, or create conflicting duplicated elements. Fixed service descriptions are sufficient if they contain an XML element parameter populated from attacker-controlled input. Users are not directly affected if they only use Guzzle Services to deserialize HTTP response bodies. Response XML parsing uses the response XML location visitor and does not invoke the vulnerable request XML serializer. Response bodies matter only in a second-order flow, such as parsing attacker-controlled response XML, storing or forwarding a parsed string value, and later using it as a `location: xml` request parameter. The issue is patched in `1.5.3` and later by safely splitting embedded CDATA terminators before serialization. The fix preserves the original scalar value as XML text and prevents injected nodes. As a workaround, constrain attacker-controlled XML element values with a strict `enum`, `pattern`, or custom filter that excludes `]]>`, or avoid serializing untrusted data into `location: xml` element text until patched. Where appropriate for the service schema, XML attributes are not affected because they are written with XMLWriter attribute APIs rather than CDATA sections. To determine whether action is needed, search service descriptions for request parameters using `location: xml`, including operation `parameters` and `additionalParameters`. Response-only `models` are not directly affected unless parsed values are reused for request serialization. For object and array parameters, review nested scalar properties because leaf element values can still be affected.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-11 15:57 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/guzzle/guzzle-services/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| guzzle | guzzle-services |
Affected:
< 1.5.4
|
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CVE-2026-48590 (GCVE-0-2026-48590)
Vulnerability from cvelistv5 – Published: 2026-08-21 09:51 – Updated: 2026-08-21 12:25
VLAI
EPSS
VEX
Title
Element and Attribute Names Injected Verbatim into XML Output in xml_builder
Summary
XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection.
This vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.element/1, XmlBuilder.element/2, XmlBuilder.element/3.
Element names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (<, >, ", ', &). An attacker who can influence a name argument (for example, an element name derived from a JSON object key or an HTTP form field name) can inject arbitrary XML markup including extra elements, comments, and event-handler attributes into the output document.
This issue affects xml_builder: from 0.0.1 before 2.4.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 12:24 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/joshnuss/xml_builder/security/… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-48590.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-48590 | related |
| https://github.com/joshnuss/xml_builder/commit/d5… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| joshnuss | xml_builder |
Affected:
0.0.1 , < 2.4.1
(semver)
cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:* |
|
| joshnuss | xml_builder |
Affected:
9fb49131ad3ee146a4c9db9bc175bdffe32e30a0 , < d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859
(git)
cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:* |
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CVE-2026-47273 (GCVE-0-2026-47273)
Vulnerability from cvelistv5 – Published: 2026-05-27 20:03 – Updated: 2026-05-28 13:26
VLAI
EPSS
VEX
Title
pam_usb: XPath injection via PAM-supplied identifiers in pam_usb configuration queries
Summary
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, pam_usb builds XPath expressions from user-supplied identifiers (PAM username, service name) and device-supplied identifiers (USB device serial, model, vendor) to query /etc/pamusb.conf. These identifiers were not validated for XPath metacharacters, allowing injection of arbitrary XPath predicates. This vulnerability is fixed in 0.9.0.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 13:26 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mcdope/pam_usb/security/adviso… | x_refsource_CONFIRM |
| https://github.com/mcdope/pam_usb/pull/311 | x_refsource_MISC |
| https://github.com/mcdope/pam_usb/commit/721fed08… | x_refsource_MISC |
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CVE-2026-47080 (GCVE-0-2026-47080)
Vulnerability from cvelistv5 – Published: 2026-08-21 09:49 – Updated: 2026-08-21 12:32
VLAI
EPSS
VEX
Title
CDATA Section Breakout via Unsanitised ]]> in xml_builder
Summary
XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection.
This vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.escape/1.
The escape/1 clause for {:cdata, data} in lib/xml_builder.ex concatenates data verbatim between the CDATA opener <![CDATA[ and closer ]]> without rewriting or splitting on the embedded ]]> sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on ]]> and emit adjacent CDATA sections. An attacker who can supply input containing ]]> closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.
This issue affects xml_builder: from 0.0.7 before 2.4.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 12:30 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/joshnuss/xml_builder/security/… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-47080.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-47080 | related |
| https://github.com/joshnuss/xml_builder/commit/bf… | patch |
| https://vincent.vulcoord.net/score/?state=Not+Sco… | exploit |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| joshnuss | xml_builder |
Affected:
0.0.7 , < 2.4.1
(semver)
cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:* |
|
| joshnuss | xml_builder |
Affected:
26766f884ed19adee1563522c7afb5f056a6f3b5 , < bfb1ada071ccc1e384c30f782197ca5154106706
(git)
cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:* |
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"vendor": "joshnuss",
"versions": [
{
"lessThan": "bfb1ada071ccc1e384c30f782197ca5154106706",
"status": "affected",
"version": "26766f884ed19adee1563522c7afb5f056a6f3b5",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.4.1",
"versionStartIncluding": "0.0.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Joshua Nussbaum"
},
{
"lang": "en",
"type": "coordinator",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eXML Injection vulnerability in joshnuss xml_builder (\u003ccode\u003eXmlBuilder\u003c/code\u003e module) allows Content Spoofing, XML Injection.\u003c/p\u003e\n\u003cp\u003eThis vulnerability is associated with program files \u003ccode\u003elib/xml_builder.ex\u003c/code\u003e and program routines \u003ccode\u003eXmlBuilder.generate/1\u003c/code\u003e, \u003ccode\u003eXmlBuilder.generate/2\u003c/code\u003e, \u003ccode\u003eXmlBuilder.escape/1\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003eescape/1\u003c/code\u003e clause for \u003ccode\u003e{:cdata, data}\u003c/code\u003e in \u003ccode\u003elib/xml_builder.ex\u003c/code\u003e concatenates data verbatim between the CDATA opener \u003ccode\u003e\u0026lt;![CDATA[\u003c/code\u003e and closer \u003ccode\u003e]]\u0026gt;\u003c/code\u003e without rewriting or splitting on the embedded \u003ccode\u003e]]\u0026gt;\u003c/code\u003e sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on \u003ccode\u003e]]\u0026gt;\u003c/code\u003e and emit adjacent CDATA sections. An attacker who can supply input containing \u003ccode\u003e]]\u0026gt;\u003c/code\u003e closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.\u003c/p\u003e\n\u003cp\u003eThis issue affects xml_builder: from 0.0.7 before 2.4.1.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "XML Injection vulnerability in joshnuss xml_builder (`XmlBuilder` module) allows Content Spoofing, XML Injection.\n\nThis vulnerability is associated with program files `lib/xml_builder.ex` and program routines `XmlBuilder.generate/1`, `XmlBuilder.generate/2`, `XmlBuilder.escape/1`.\n\nThe `escape/1` clause for `{:cdata, data}` in `lib/xml_builder.ex` concatenates data verbatim between the CDATA opener `\u003c![CDATA[` and closer `]]\u003e` without rewriting or splitting on the embedded `]]\u003e` sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on `]]\u003e` and emit adjacent CDATA sections. An attacker who can supply input containing `]]\u003e` closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.\n\nThis issue affects xml_builder: from 0.0.7 before 2.4.1."
}
],
"value": "XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection.\n\nThis vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.escape/1.\n\nThe escape/1 clause for {:cdata, data} in lib/xml_builder.ex concatenates data verbatim between the CDATA opener \u003c![CDATA[ and closer ]]\u003e without rewriting or splitting on the embedded ]]\u003e sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on ]]\u003e and emit adjacent CDATA sections. An attacker who can supply input containing ]]\u003e closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.\n\nThis issue affects xml_builder: from 0.0.7 before 2.4.1."
}
],
"impacts": [
{
"capecId": "CAPEC-250",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-250 XML Injection"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 2.1,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-91",
"description": "CWE-91 XML Injection (aka Blind XPath Injection)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-21T09:49:34.772Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-67r9-hmxw-h595"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-47080.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-47080"
},
{
"tags": [
"patch"
],
"url": "https://github.com/joshnuss/xml_builder/commit/bfb1ada071ccc1e384c30f782197ca5154106706"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "CDATA Section Breakout via Unsanitised ]]\u003e in xml_builder"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-47080",
"datePublished": "2026-08-21T09:49:34.772Z",
"dateReserved": "2026-05-18T17:28:10.319Z",
"dateUpdated": "2026-08-21T12:32:15.846Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
CAPEC-250: XML Injection
An attacker utilizes crafted XML user-controllable input to probe, attack, and inject data into the XML database, using techniques similar to SQL injection. The user-controllable input can allow for unauthorized viewing of data, bypassing authentication or the front-end application for direct XML database access, and possibly altering database information.
CAPEC-83: XPath Injection
An attacker can craft special user-controllable input consisting of XPath expressions to inject the XML database and bypass authentication or glean information that they normally would not be able to. XPath Injection enables an attacker to talk directly to the XML database, thus bypassing the application completely. XPath Injection results from the failure of an application to properly sanitize input used as part of dynamic XPath expressions used to query an XML database.